Scroll conveyor



ug- 22, 1957 H. F. SILVER ETAL 3,337,026

S CROLL CONVEYOR Original Filed March 14, 1962 Zane/zc@ fi. gf, fran/L, Puce,

United States Patent Office SCROLL CONVEYOR Harold F. Silver, Clarence R. Steele, and Frank B. Price, Denver, Colo., assignors, by direct and mesne assignments, to American Factors Associates, Limited, Honolulu, Hawaii, a corporation of Delaware Original application Nov. 14, 1962, Ser. No. 237,575, now Patent No. 3,248,263, dated Apr. 26, 1966. Divided and this application Mar. 4, 1966, Ser. No.

1 Claim. (Cl. 198-213) This application is a division of applicants application Ser. No. 237,575, iiled Nov. 14, entitled, Solvent Extraction Process, now Patent No. 3,248,263. That application discloses apparatus especially adapted for the treatment of solid materials, such as sugar cane, when in subdivided form :and of a size and consistency such as will will lend itself to diffusion activity claimed in said application.

It is desirable to employ scrolls for conveying such materials from one area to another `area in such apparatus in order to enjoy the advantages of such scrolls, which are known to be generally eicient in use as well as easy and inexpensive to manufacture and maintain in operation.

However, it is a well known fact that certain fibrous materials, such as subdivided sugar cane, cannot be handled satisfactorily in conventional scroll conveyors because of the tendency of such materials to felt and mat and wedge lbetween the periphery of the scroll iiight and the housing for the scroll, wit-h consequent apparatus. The difficulty has been encountered when the use of conventional scroll conveyors was attempted for handling subdivided sugar cane.

Accordingly, an object of the present invention is to provide a novel construction for scroll conveyors which will render them capable of satisfactory use with various materials, such as subdivided sugar cane, and will permit the enjoyment of the advantages of using scroll conveyors with such materials without encountering jamming of the apparatus or unwanted felting, matting, or wedging of the material between the periphery of the scroll flight and the housing therefor.

The ligure of the accompanying drawing is a crosssectional, elevational view through a scroll conveyor and housing therefor constructed in yaccordance with this invention.

The scroll of this invention has made it entirely feasible to move masses of sugar cane fibers, or like material, by scrolls without suifering the jamming and clogging charcopending 1962, and

jamming of the 3,337,026 Patented Aug. 22, 1967 2 disclosed in The lt a housing scroll flight and the housing behind tion of rotation of the scroll insures that there will be no Wedging of material `between the scroll .and the housing to cause the jamming experienced with such material in conventional scrolls.

The form of this invention herein disclosed is illustrative and terminating in a lower end adjacent to the periphery of the edge of said scroll flight, said conveyor positioned with the yupper portion of sa-id scroll Hight above said lower end of said inclined Wall, an adjustable feed blade mounted radially with respect to said scroll flight and adjustably secured to and forming an extension of said inclined wall, adjustable attaching means for securing said to said inclined wall in close proximity to the space between the peripheral edge of said scroll iiight and said housing becomes progressively greater for reducing the wedgin-g and jamming of material between said housing and said scroll Hight.

References Cited UNITED STATES PATENTS 2,066,756 1/1937 Anderson 198-64 X 2,410,943 1.1/1946 Huddle 302-137 EVON C. BLUNK, Primary Examiner. RICHARD E. AEGERTER, Examiner. 

